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<?php |
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/** |
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* Date: 01.12.15 |
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* |
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* @author Portey Vasil <[email protected]> |
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*/ |
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namespace Youshido\GraphQL\Validator\ResolveValidator; |
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use Youshido\GraphQL\Execution\Context\ExecutionContextInterface; |
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use Youshido\GraphQL\Execution\Request; |
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use Youshido\GraphQL\Field\AbstractField; |
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use Youshido\GraphQL\Field\InputField; |
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use Youshido\GraphQL\Parser\Ast\Argument; |
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use Youshido\GraphQL\Parser\Ast\ArgumentValue\Literal; |
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use Youshido\GraphQL\Parser\Ast\ArgumentValue\Variable; |
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use Youshido\GraphQL\Parser\Ast\Field as AstField; |
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use Youshido\GraphQL\Parser\Ast\Fragment; |
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use Youshido\GraphQL\Parser\Ast\FragmentReference; |
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use Youshido\GraphQL\Parser\Ast\Mutation; |
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use Youshido\GraphQL\Parser\Ast\Query; |
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use Youshido\GraphQL\Type\AbstractType; |
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use Youshido\GraphQL\Type\InterfaceType\AbstractInterfaceType; |
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use Youshido\GraphQL\Type\ListType\AbstractListType; |
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use Youshido\GraphQL\Type\Object\AbstractObjectType; |
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use Youshido\GraphQL\Type\TypeMap; |
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use Youshido\GraphQL\Type\TypeService; |
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use Youshido\GraphQL\Type\Union\AbstractUnionType; |
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use Youshido\GraphQL\Validator\Exception\ResolveException; |
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class ResolveValidator implements ResolveValidatorInterface |
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{ |
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/** @var ExecutionContextInterface */ |
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protected $executionContext; |
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public function __construct(ExecutionContextInterface $executionContext) |
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{ |
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$this->executionContext = $executionContext; |
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} |
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/** |
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* @param AbstractObjectType $objectType |
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* @param Mutation|Query|AstField $field |
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* @return null |
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*/ |
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public function objectHasField($objectType, $field) |
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{ |
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if (!($objectType instanceof AbstractObjectType) || !$objectType->hasField($field->getName())) { |
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$this->executionContext->addError(new ResolveException(sprintf('Field "%s" not found in type "%s"', $field->getName(), $objectType->getNamedType()->getName()))); |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function validateArguments(AbstractField $field, $query, Request $request) |
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{ |
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if (!count($field->getArguments())) return true; |
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$requiredArguments = array_filter($field->getArguments(), function (InputField $argument) { |
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return $argument->getType()->getKind() == TypeMap::KIND_NON_NULL; |
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}); |
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$withDefaultArguments = array_filter($field->getArguments(), function (InputField $argument) { |
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return $argument->getConfig()->get('default') !== null; |
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}); |
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foreach ($query->getArguments() as $argument) { |
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View Code Duplication |
if (!$field->hasArgument($argument->getName())) { |
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$this->executionContext->addError(new ResolveException(sprintf('Unknown argument "%s" on field "%s"', $argument->getName(), $field->getName()))); |
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return false; |
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} |
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/** @var AbstractType $argumentType */ |
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$originalArgumentType = $field->getArgument($argument->getName())->getType(); |
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$argumentType = $field->getArgument($argument->getName())->getType()->getNullableType()->getNamedType(); |
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if ($argument->getValue() instanceof Variable) { |
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/** @var Variable $variable */ |
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$variable = $argument->getValue(); |
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//todo: here validate argument |
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if ($variable->getTypeName() !== $argumentType->getName()) { |
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$this->executionContext->addError(new ResolveException(sprintf('Invalid variable "%s" type, allowed type is "%s"', $variable->getName(), $argumentType->getName()))); |
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return false; |
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} |
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/** @var Variable $requestVariable */ |
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$requestVariable = $request->getVariable($variable->getName()); |
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if (!$requestVariable) { |
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$this->executionContext->addError(new ResolveException(sprintf('Variable "%s" does not exist for query "%s"', $argument->getName(), $field->getName()))); |
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return false; |
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} |
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$variable->setValue($requestVariable); |
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} |
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$values = $argument->getValue()->getValue(); |
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if (!$originalArgumentType instanceof AbstractListType) { |
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$values = [$values]; |
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} |
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foreach($values as $value) { |
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if (!$argumentType->isValidValue($argumentType->parseValue($value))) { |
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$this->executionContext->addError(new ResolveException(sprintf('Not valid type for argument "%s" in query "%s"', $argument->getName(), $field->getName()))); |
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return false; |
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} |
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} |
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if (array_key_exists($argument->getName(), $requiredArguments)) { |
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unset($requiredArguments[$argument->getName()]); |
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} |
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if (array_key_exists($argument->getName(), $withDefaultArguments)) { |
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unset($withDefaultArguments[$argument->getName()]); |
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} |
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} |
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if (count($requiredArguments)) { |
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$this->executionContext->addError(new ResolveException(sprintf('Require "%s" arguments to query "%s"', implode(', ', array_keys($requiredArguments)), $query->getName()))); |
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return false; |
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} |
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if (count($withDefaultArguments)) { |
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foreach ($withDefaultArguments as $name => $argument) { |
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$query->addArgument(new Argument($name, new Literal($argument->getConfig()->get('default')))); |
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} |
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} |
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return true; |
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} |
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public function assertTypeImplementsInterface(AbstractType $type, AbstractInterfaceType $interface) |
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{ |
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if (!$interface->isValidValue($type)) { |
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throw new ResolveException('Type ' . $type->getName() . ' does not implement ' . $interface->getName()); |
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} |
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} |
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public function assertTypeInUnionTypes(AbstractType $type, AbstractUnionType $unionType) |
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{ |
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$unionTypes = $unionType->getTypes(); |
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$valid = false; |
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if (empty($unionTypes)) return false; |
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foreach ($unionTypes as $unionType) { |
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if ($unionType->getName() == $type->getName()) { |
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$valid = true; |
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break; |
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} |
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} |
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if (!$valid) { |
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throw new ResolveException('Type ' . $type->getName() . ' not exist in types of ' . $unionType->getName()); |
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} |
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} |
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/** |
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* @param Fragment $fragment |
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* @param FragmentReference $fragmentReference |
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* @param AbstractType $queryType |
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* |
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* @throws \Exception |
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*/ |
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public function assertValidFragmentForField(Fragment $fragment, FragmentReference $fragmentReference, AbstractType $queryType) |
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{ |
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if ($fragment->getModel() !== $queryType->getName()) { |
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throw new ResolveException(sprintf('Fragment reference "%s" not found on model "%s"', $fragmentReference->getName(), $queryType->getName())); |
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} |
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} |
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public function isValidValueForField(AbstractField $field, $value) |
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{ |
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$fieldType = $field->getType(); |
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if ($fieldType->getKind() == TypeMap::KIND_NON_NULL && is_null($value)) { |
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$this->executionContext->addError(new ResolveException(sprintf('Cannot return null for non-nullable field %s', $field->getName()))); |
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return null; |
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} else { |
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$fieldType = $this->resolveTypeIfAbstract($fieldType->getNullableType(), $value); |
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} |
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if (!is_null($value) && !$fieldType->isValidValue($value)) { |
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$this->executionContext->addError(new ResolveException(sprintf('Not valid value for %s field %s', $fieldType->getNullableType()->getKind(), $field->getName()))); |
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return null; |
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} |
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return true; |
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} |
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public function resolveTypeIfAbstract(AbstractType $type, $resolvedValue) |
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{ |
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if (TypeService::isAbstractType($type)) { |
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/** @var AbstractInterfaceType $type */ |
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$resolvedType = $type->resolveType($resolvedValue); |
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if (!$resolvedType) { |
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$this->executionContext->addError(new \Exception('Cannot resolve type')); |
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return $type; |
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} |
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if ($type instanceof AbstractInterfaceType) { |
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$this->assertTypeImplementsInterface($resolvedType, $type); |
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} else { |
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/** @var AbstractUnionType $type */ |
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$this->assertTypeInUnionTypes($resolvedType, $type); |
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} |
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return $resolvedType; |
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} |
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return $type; |
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} |
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/** |
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* @return ExecutionContextInterface |
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*/ |
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public function getExecutionContext() |
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{ |
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return $this->executionContext; |
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} |
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/** |
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* @param ExecutionContextInterface $executionContext |
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*/ |
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public function setExecutionContext($executionContext) |
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{ |
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$this->executionContext = $executionContext; |
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} |
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} |
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Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.